SEO stands for search engine optimisation and is about optimizing ones’ website to get it ranking on the first page of Google as well as other search engines.
SEO assists your website in gaining more visibility on Google and other search engines. This aids in getting more exposure to your website. Also builds in credibility and authority on search engines. SEO is like the engine to your website.
SEO is not an exact science as Google changes its ranking algorithm a few times a month and does not notify anyone on what the actual changes are – we have to figure them out. The major changes are however released publicly but Google still does not notify us on how to optimize.